-70.99% is the change from 917 to 266
Calculation steps:
[( 266 - 917 ) ÷ 917] x 100 = -70.99%
Formula
Percentage change = [(266 - 917) / 917] x 100
Subtract the new number by the original number
266 - 917 = -651
-651 ÷ 917 = -0.7099236641221374
-0.7099236641221374 x 100 = -70.99%